He said: “I don’t want to have to explain to your parents why you didn’t graduate, so I went to the Dean and I made a deal. The deal is you can either wait it out and hope that we don’t identify you, or you can identify yourself to your lab instructor and you can complete the rest of the course and the grade you get in the course is the grade you earned in the course.”
Prof Quinn also added a requirement for those who came forward complete a four hour course in ethics. In return there would be no permanent record of the cheating.
So far more than 200 students have admitted to cheating.
A video of the 15-minute lecture is included with the story. Link -via reddit